Windows in the other hand is EXPENSIVE! Windows comes with little good software, and extra applications will cost you big time. That nice noise they have when you boot is important, cause you'll have to hear that alot in one day.
Has different window managers and different desktops for different people to use. You could even make you're own window manager or desktop.
When I installed Mandrake Linux. It was easy and simple to use. I had it barely configured and used it only to help me on my homework. Then I got Nvidia drivers for my video card, and started gaming and other stuff. Now, Linux is the only thing I ever need.
Windows is a piece of crap and some nice alternatives are BSD, Mac OS X, and Solaris. These are UNIX based and are some of the best operating systems.
Linux is the perfect machine for games! Nintendo and Sony, make a new console with Linux and you'll school any X-Box 2!